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transmission fluid pressure sensor
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=80776
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Author:  Diver1430 [ Mon Dec 01, 2014 6:50 pm ]
Post subject:  transmission fluid pressure sensor

I ve got an error code of P0871 Mod$41
Transmission Fluid Pressure sensor, switch C circuit.

I can t seem to find the sensor on the vehicle and in the various manuals
Any input
tks

Author:  gmctd [ Mon Dec 01, 2014 8:30 pm ]
Post subject:  Re: transmission fluid pressure sensor

Line pressure sensor can be found on the passenger-side case rear in front the tailhousing flange, above the pan rail

However, since specifically mentions C-switch, more than likely inside the pan in the valve-body - connector pins
4,5,8,9,13, then 16,18,11,15,14,

Try unplugging the connector on the driver-side, then re-inserting it - this will burnish the contacts, may restore connection

Author:  Diver1430 [ Mon Dec 01, 2014 9:49 pm ]
Post subject:  Re: transmission fluid pressure sensor

Is this a stand alone wire, not part of the harness Across the engine top. I had thought that maybe it was a plug I missed when putting the system back together.
Where would it connect on the drivers side, roughly. Also, I m at home, not with the jeep, I thought that where u are speaking of would be fwd of the xmission.
Tks

Author:  dirtmover [ Mon Dec 01, 2014 10:53 pm ]
Post subject:  Re: transmission fluid pressure sensor

He's talking about the connector on the solenoid pack. You can reach it between the driveshaft and transmission, between the two speed sensors. It can be a bit of a witch to get the latch released. Some light downward pressure on the connector itself will help to release it.

P0871 is O/D pressure switch - pin 16

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